HARD
8th Chhattisgarh Board
IMPORTANT
Earn 100

How much carat is pure gold? Why is pure gold not used for making ornaments?

Important Questions on Metals and Non-Metals

HARD
8th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VIII>Chapter 5 - Metals and Non-Metals>QUESTIONS FOR PRACTICE>Q 5
What are alloys? Give names of any four alloys and write their constituents and uses.
HARD
8th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VIII>Chapter 5 - Metals and Non-Metals>QUESTIONS FOR PRACTICE>Q 5
What is metal corrosion? What are the ways to protect corrosion?
MEDIUM
8th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VIII>Chapter 5 - Metals and Non-Metals>QUESTIONS FOR PRACTICE>Q 5
Why is graphite used as an electrode?
MEDIUM
8th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VIII>Chapter 5 - Metals and Non-Metals>QUESTIONS FOR PRACTICE>Q 5
Iron is not used in making of railway tracks? Why?
HARD
8th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VIII>Chapter 5 - Metals and Non-Metals>QUESTIONS FOR PRACTICE>Q 5
Explain through an activity that magnesium is more reactive than Iron?
HARD
8th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VIII>Chapter 5 - Metals and Non-Metals>QUESTIONS FOR PRACTICE>Q 5
Rub any copper vessel with sandpaper and observe. Now explain with giving reasons.